有困难

The Monkey Sun Wu-kung is able to make seventy-two metamorphoses, but there is always one difficulty, changing his tail

孙猴子七十二变，有一个困难，就是尾巴不好变。

Curvilinear calcification suggests an aneurysm but is a less specific finding because it can also occur in craniopharyngiomas and sphenoidal masses. The intense enhancement of the residual lumen is relatively specific, but differentiation from other masses may be difficult on CT scans depending on the timing and degree of vascular enhancement. The MR imaging features are usually diagnostic, although they can be very subtle [2]. Significant signal heterogeneity is seen with T1 hyperintense signal due to subacute thrombus or flow related enhancement. Areas of T2 hypointensity can be seen due to intracellular deoxy or methemoglobin, calcification, or flow void.

线样钙化提示动脉瘤，但不是一个非常特异的征像，因为这也可以见于颅咽管瘤和蝶骨肿瘤，管腔样明显强化更特异些，但是在CT上与其他肿瘤鉴别可能是困难的，因为这取决与增强的时间与血管强化的程度，MR的特征性表现是更具有诊断意义的，即使有时候可能表现的非常细微，在T1上可以看到明显的不同信号成分，这是由于亚急性的血栓或流动相关增强效应，T2序列上可以看到低信号区域，这是由于细胞内脱氧或高铁血红蛋白，钙化，或流空效应。

Other times it can be more difficult and a MIB is more useful.

其他情况下，就非常困难了，这个时候使用MIB就非常有帮助。

The duty of resolving, then, seems to arise when either what is our duty is not perfectly clear, or there are desires which militate against the doing of it; and in either case it is a duty arising from the primary duty of acting in a certain way.

这样看来，无论责任是否明晰，无论解决问题是否有潜在阻力，我们都面临着亟待解决的困难。不管是哪种情况，我们的责任都是行动之最初的动力。

Even if energy saving window could be work when the molarity was decreased, but might not phase separation in real situation.

经比较可以发现当浓度降低其节能效率下降、临界溶解温度范围提高、反应速度加快，虽然浓度降低仍可以达到节能的目的且反应速度加快，但临界溶解温度范围提高可能使实际运用上会有所困难，有机会产生节能窗材无法相分离的情形，加上在低体积莫耳浓度时相分离后水胶粒子会沉淀的现象，使节能窗材无法顺利运作，故实际运用上不适合降低节能窗材的浓度。

This is one of the most difficult problems in the history of monasticism, but the experience of fifteen hundred years has turned the scales in favour of a limited tenure of office.

这是一个最困难的问题，在历史上的修道生活，但经验一千五百年把秤赞成有限度的表扬。

Charles Montesquieu Only those who have the patience to do simple things perfectly ever acquire the skill to do difficult things easily.

只有有耐心圆满完成简单工作的人，才能够轻而易举的完成困难的事。

I have trouble breathing when I have morning sickness.

我在晨起不适时会有呼吸困难。

For there a man does profit more and merit more abundant grace, when he does most to overcome himself and mortify his spirit.

有一件事最能阻挡人修德前进、坚心定改，就是怕困难和斗争的苦。

There are many difficulties for us to face to, such as had weather, muddy road.

我们有许多困难要面对，如恶劣的天气、泥泞的道路。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了